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SAMPLE INFO : 93SJP7
Sample ID:93SJP7
Station ID:93SJP7
Latitude:62.36628849
Longitude:-143.0574098
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
Text Description:
Thick, platy flow between two laharic units at Site 9. Fine-grained, holocrystalline, porphyritic to glomeroporphyritic with a matrix of cryptocrystalline material, opaque, plagioclase, clinopyroxene and minor alteration. Plagioclase phenocrysts (An38 - An60) are up to 1.8 mm and may be oscillatory zoned, often have large melt inclusions, and some have sieve textured zones. Orthopyroxene phenocrysts are up to 1.9 mm and a few grains partially include plagioclase; one orthopyroxene phenocrysts has a patchy layer of clinopyroxene which is then rimmed by orthopyroxene. Clinopyroxene phenocrysts are up to 0.7 mm. Opaque phenocrysts are up to 0.1 mm and the larger grains are included in orthopyroxene phenocrysts. 84.5% matrix, 12.2% plagioclase, 3.2% orthopyroxene, 0.1% alteration.

References:
Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
93SJP762.36628849-143.0574098Preece, S. J.1993-00-00 Skookum CreekNabesna B-5; T7N, R13E, S20Thick, platy flow between two laharic units at Site 9. Fine-grained, holocrystalline, porphyritic to glomeroporphyritic with a matrix of cryptocrystalline material, opaque, plagioclase, clinopyroxene and minor alteration. Plagioclase phenocrysts (An38 - An60) are up to 1.8 mm and may be oscillatory zoned, often have large melt inclusions, and some have sieve textured zones. Orthopyroxene phenocrysts are up to 1.9 mm and a few grains partially include plagioclase; one orthopyroxene phenocrysts has a patchy layer of clinopyroxene which is then rimmed by orthopyroxene. Clinopyroxene phenocrysts are up to 0.7 mm. Opaque phenocrysts are up to 0.1 mm and the larger grains are included in orthopyroxene phenocrysts. 84.5% matrix, 12.2% plagioclase, 3.2% orthopyroxene, 0.1% alteration.93SJP7LavaWhole-rock 58.36 1.2 17.4 6.53 0.11 3.6 6.69 4.4 1.33 0.29 99.7555DCP7.196.53LOI=0.04DCP 23.8 482 535 17.2 40.4 20.7 4.4 1.4 5.5 4.1 2.5 2.3 0.3 27 165 6.2 1.7< 0.5 20.4 159 63 37 43 72 17.6 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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